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Inventories | 12 Months Ended
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Sep. 30, 2021
Inventories |
Inventories | 4. Inventories Inventories consist of the following:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | September 30,
​ |  | 2021 |  | 2020
​ | ​ | (Amounts in thousands)
Raw materials | ​ | $ | 736 | ​ | $ | 574
Work-in-process | ​ |  | 289 | ​ | ​ | 213
Finished goods | ​ |  | 2,964 | ​ | ​ | 4,498
Total | ​ | $ | 3,989 | ​ | $ | 5,285
​ ​ ​ ​ Several components used in our HPP segment products are obtained from sole-source suppliers. We are dependent on key vendors such as Xilinx, NXP, and BCRM for a variety of processors for certain products and Wind River Systems, Inc. for VxWorks operating system software. We are dependent Mellanox Technologies for our high-speed interconnect components. Despite our dependence on these sole-source suppliers, based on our current forecast and our projected sales obligations, we believe we have adequate inventory on hand and our current near-term requirements can be met in the existing supply chain. ​ COVID-19 has adversely affected the distribution channel leading to significantly longer lead times when ordering product. Manufacturers are not producing as much product as prior to the pandemic due to disruptions, resulting in supply shortages. Additionally, recent global shipping delays have exacerbated this problem. The TS segment has many vendors it transacts with and supply shortages are pervasive with many of them.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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